A train collision north of London is under investigation by UK accident investigators, after a driver dies and dozens of passengers are injured. Multiple outlets report that more than 80 people receive medical treatment following the crash. Of those injured, nine people are described as being in critical condition. In total, 28 people remain in hospital after the incident, with some sources also indicating that nine are critically hurt. The collision prompts an ongoing probe into its cause, though none of the reports provided specific findings at the time of publication. The reports consistently describe the incident location as north of London and identify the driver as the fatality. They also emphasize the scale of the medical response, noting that hospitals treat a large number of passengers in the immediate aftermath. Details about the circumstances of the collision, including what led to it or the type of trains involved, are not provided in the excerpts shared by the outlets.